Home / 193,166.40-289,819.20-86,541.60

Finding the Fourth Proportional to 193,166.40, 289,819.20 and 86,541.60

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Solution

The fourth proportional to 193,166.40, 289,819.20 and 86,541.60 is: 129,843.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,166.40 : 289,819.20 = 86,541.60 : x
  2. Step 2: Convert to fraction form
    193,166.40/289,819.20 = 86,541.60/x
  3. Step 3: Cross multiply
    193,166.40x = 289,819.20 × 86,541.60
  4. Step 4: Simplify right side
    193,166.40x = 25,081,417,278.72
  5. Step 5: Solve for x
    x = 25,081,417,278.72/193,166.40
  6. Step 6: Final answer
    x = 129,843.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.